<template>
  <el-container class="home_container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/images/touxiang.jpg" alt="">
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
   
   
    <!-- 页面主体区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <!-- 测边栏折叠 -->
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单区域 -->
        <el-menu background-color="#333744" text-color="#fff" active-text-color="#409eff" unique-opened 
        :collapse="isCollapse" :collapse-transition="false" :router="true" :default-active="$route.path">
          <!-- 一级菜单 -->
          <!-- item.id获取的是数值，拼接''就会隐形转换为字符串 -->
          <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
            <!-- 一级菜单模板 -->
            <template slot="title">
              <!-- 一级菜单图标 -->
              <i class="iconfont"  :class="iconsObj[item.id]"></i>
              <!-- 一级菜单文字 -->
              <span>{{item.authName}}</span>
            </template>

            <!-- 二级菜单 -->
            <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id"><template slot="title">
              <!-- 二级菜单图标 -->
              <i class="el-icon-menu"></i>
              <!-- 二级菜单文字 -->
              <span>{{subItem.authName}}</span>
            </template></el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>

      <!-- 右侧内容 -->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container> 
</template>

<script>
export default {
  data() {
    return {
        // 左侧菜单数据
       menuList: [ ],
       // 一级菜单分类图标数据
       iconsObj: {
         '125': 'icon-ziyuan',
         '103': 'icon-tijikongjian',
         '101': 'icon-shangpinchuangjian',
         '102': 'icon-danju',
         '145': 'icon-baobiao'
       },
       // 是否折叠
       isCollapse: false
    }
  },
  created() {
    this.getMenuList()
  },
  methods: {
    logout() {
      // 清除token
      window.sessionStorage.clear()
      // 清除token后必须跳转到登录页
      this.$router.push('/login')
    },
    // 获取所有菜单
    async getMenuList() {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error(res,meta,data)
      this.menuList = res.data
      console.log(res)
    },
    // 点击按钮，切换菜单的折叠与展开
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    }
  },
}
</script>

<style lang="less" scoped>
.home_container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  >div{
    display: flex;
    align-items: center;
    img {
      width: 60px;
      height: 60px;
    }
    span {
      margin-left: 15px;
    }
  }
}


.el-aside {
  background-color: #333744;
  .el-menu {
    //解决左测菜单中右边突出的问题
    border-right: 0;
  }
}
.iconfont {
  margin-right: 10px;
}
.toggle-button {
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  letter-spacing: 0.2em;
  text-align: center;
  cursor: pointer;
}

.el-main {
  background-color: #eaedf1;
}



</style>
